Chert

//t͡ʃɝt// noun

Definitions

Noun
  1. 1
    Massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral. uncountable
  2. 2
    variety of silica containing microcrystalline quartz wordnet
  3. 3
    A flint-like tool made from chert. countable

Etymology

Unknown.

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